Sheet metal shearing machine



(No Model.) 2 Sheets-Sheet 1 G. WAIS. SHEET METAL SHEA'R'ING MACHINE.

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(No Model.) 2 Sheets-Sheet 2.

. O. WAIS.

V SHEET METALSHEARING MACHINE.

No. 271,956. Patented Feb. 6,1883.

N. PETERS, PMhrUlhognph-r, Waihinglwn, \3!v C- 4 UNITED STATES PATENT OFFIcE.

CHRISTIAN VVAIS, OF NEWPORT, KENTUCKY, ASSIGNOR OF ONE-HALF TO WILLIAM ROTHWEILER, OF SAME PLACE.

SHEET-METAL-SHEARING MACHINE.

SPECIFICATION forming part of Letters Patent No. 271,956, dated February 6, 1883.

Application filed September 6, 1882. (No model.)

To all whom it may concern:

Be it known that 1, CHRISTIAN WAIs, a citizen of the United States, and a resident of Newport, in the county of Campbell and State of Kentucky, have invented certain new and useful Improvements in Machines for Shearing Sheet Metals, of which the following is a specification.

My invention relates to improvements in [0 machines for shearing iron, steel, and other materials in sheet form.

The object ofmy invention is toprovide novel, economical, and durable means, in a single machine, for cutting, squaring, splitting,

and trimming sheet metal, the arrangement, construction, and operationof which will be fully understood by reference to the accompanying drawings and the following description thereof.

Figure 1 is a longitudinal front elevation of the machine embodying my invention. Fig. 2 is an end elevation of the same, showing a sheet in cross-section in position for the splitting or trimming operation of the knives. Fig.

3 is a plan view of the machine. Fig. 4. is a vertical sectional elevation on line .70 m, Fig. 1. Fig. 5 is an enlarged view, showing the guide in the end of one of the overhanging arms for the end of the shear-beam to move in. Fig. 6

0 is an enlarged view, showing oneend of the shear-beam and the link for connectiugit with itsoperating-lever, which is shown in section.

A A represent the legs forming the supporting-frame of the machine. I j j 5 B represents a driving-shaftjournaled .in suitable boxes, b b, on the cross-bars a a of the frame.

C is a driving-pulley keyed to shaft B, and connected by beltG, or otherwise, with any 4.0 motive power.

' D is a fly-Wheel, also keyed to shaft B.

c is a gear or pinion keyed to shaft B. j

E is a horizontal shaft mounted parallel with shaft B in boxes c e on the legs 6 e of 5 the frame. i v

E is a gear-wheel mounted loosely on shaft E. It is of 'larger diameter thangear 0, with which it meshes.

5o gagesa clutch-collar, G. Collar G is mounted on shaft E, and slides on a feather or key, 9.. g is a circular groove made in the periphery of collar G for receiving a pin or fork on an adjusting foot-lever, H, pivoted to a pendent arm, H, which arm is secured at its upper 5 the said clutch mechanism.

I is the platen or table upon which the sheet metalis supported for either cutting, squaring. 6 splitting, or trimming. It is mounted at its ends on the legs A A.

J is an adjustable gage-plate, against which the sheet metal is set for cutting the sheets transversely, or squaring them. It is secured 7o in'the desired position by boltsJ, passing upward from T slots or grooves j, running transversely across the table I. Grooves 9' maybe continued outward from the table to take in larger sheets by similarly-grooved bars j, 7 constructed withdovetails at one end that fit in dovetail sockets j on the rear face of table I, and secured in position by bolts or taps passing through flanges into threaded holes 1'.

K is a squaring-bar or stationary gage at one end of table 1, against which one end of the sheet sets for cutting or squarinzg L represents a steel plate, formingthe lower or stationary shear-blade, which is secured longitudinally to the front edge of the table I. 8 5

M M represent overhanging arms secured to the table I at both its ends by the bolts m m. v

N represents a vertieally-reciprocating arm or beam arranged obliquely, and moving at its ends in slots or guides N in the outer ends of overhanging arms M M.

0 represents a shear-blade secured to the beam N, along its lower edge, in the usual man- -ner. i

' P represents levers pivoted midway between their endsto the arms M M, and connecting at i one of their ends to the ends of shear-beam N F is a clutch-hub on gear E, which hub en-.

by links p, ,and their opposite ends to vertically-operating pitmen P. 10c

P P are connecting rods or pitmen, made adjustable longitudinally by coupling-nuts p, and pivotally connected at theirlower endswith crank-wheels Q, mounted on the ends of shaft E. By turning the coupling-nuts p in one direction and shortening the pitmen P the vertical movement or stroke of shear-beam N is similarly affected for cutting narrow plates, and vice versa by expanding the length of said pitmen. The links 10 p are pivoted at their upper ends to the outer ends of shearbeam N,and by their connection at their lower forked ends with the oscillating levers-P they serve to insure a direct vertical movement of said beam and its knife 0 when cutting through the sheet, and prevent the spreading away of said knife 0 from blade L.

It is a brace-bar or tie-rod for strengthening the overhanging arms M M, secured at itsends thereto.

M .are hooks at both outer ends of the table I, connecting with pins or staples m on the overhanging arms M M. These hooks are shown in their engaging position for strengthening the machine and receiving any upward strain on the outer ends of overhanging arms j M M during the cutting and squaring operations. These hooks are turned downward be low the lever of thetable for the splitting and trimming operations.

4" r are pendent presser-arms mounted on tie-rod R, under which arms thesheets pass, and prevent their curling or twisting upward during the shearingoperation.

It is obvious that, instead of the tie-rod It and pendent arms r,a heavy tie-beam or bridge tree might be substituted, with a hand-wheel and screw presser plate or plates, similar to thoseusedin paper-cutting machines, for firmly holding the sheet down on the table I during the shearing operation.

0' is a longitudinal roller mounted at its ends in bearings sunk below the plane of table I, nearits front edge, and projecting but slightly above its said plane to elevate the sheets slightly above the table and the shear-blade-L for facilitating the manipulation of the sheets, and-to prevent theabrasion of said blade whenmoving them across it.

S is an auxiliary table or frame for supportingsheets of any length during the operation of splitting or trimming them. S S are the supporting-legs of the-same.

sis a stationary horizontal bar connecting the leg S with the froutof table I.

s is a crossbar connecting the legs S.

s is a horizontal bar mounted on ayielding frame, T, composed of vertical bars t-t, passing through openings in the-cross-bar sandguidebrackets t t to a pivoted cross-head T Guidebrackets t are secured to the legs S and limitthe upward movement'of the yielding frame T. Cross-head Tis preferably made in two parts, pivotally mounted at their inner ends in the" lower forked end of pendent bar U, supportedmidway between the ends of cross-bar s.

V are coil-springs attached at their lower ends tothecross-head T, and at their opposite ends to eyebolts u, passing through cross-bar s, and adj ustably secured by handled nuts u for regulating their tension. These springs permit the yielding of table T by the pressure on-the' sheet to be cut of a presser-foot, W, mounted on the shear-beam N to prevent the curling or twisting of said sheet during the shearing operation. Presser-footW is mounted on a horizontal bar, W, secured at one end to the beam N.

widths of sheets.

n represents flanged rollers adj ustably secured to bars 8 s by set-screws a to support and regulate the out of different widths of sheets, as shown in Figs, '2, 3, and 4.

0' 0 are rollers mounted on the inner ends of the bars 8 s, the roller 0 being mounted on the stationary'bar .9, adjacent the-shearblade L,

with its periphery slightly above the blade to elevate-thesheet-s for facilitating their manipulation, and to prevent the abraision of said blade.

In the splitting or trimming operation of long sheets the squaring-bar K on table I is detached and the sheet run under the overhanging arms -'M M and upon the table S 1ongitudinally.

The manner of constructing the machine with theoverhanging arms and providing an auxiliary table a-reimportant features of my invention, and-difficulties heretofore experi- It is preferably mounted adjustable on said bar W to accommodate various enced in this class of machinery are thereby v overcome.

1. In a shearing-machlne, the horizontal brace or.tie-rod R, mounted at its ends in the overhanging 1 arms M M, and the arms or presser-bars r4, suspended from the tie-rod R, and arranged for holding the sheet firmly on the table'during the shearing operation, substantially as herein setforth.

2. The combination, in a shearing-machine, of the table-I, on whose front edge the stationary cutting-blade L is secured, with a roller, 1", in the rear of and adjacent to-the said blade, said rollerrbeingmounted'in bearings below the plane of the table, and extending slightly above the table, so as to elevate .the: sheets slightly above the latter and the 'fall by the pressure onsaid sheets of a presserfoot, W, adjustably mounted on a bar projecting from the reciprocating shear-beam N, the whole arranged, constructed, and adapted to operate substantially as and for the purpose specified.

4. In a shearing machine, the combination of the table's, provided with the adjustable my hand in the presence of two subscribing flanged gage-rollers n, acting as guides and Witnesses. I supports for the sheet during the splitting or trimming operations, with the roller 0 0, all CHRISTIAN WAIS' 5 mounted on the barss 3, substantially in the Viitnesses:

manner and for the purpose specified. J N0. E. JONES,

In testimony whereof I have hereunto set ADOLPH GLUCHOWSKY. 

